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Finding the Fourth Proportional to 529,507.35, 730,725.75 and 287,789.94

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Solution

The fourth proportional to 529,507.35, 730,725.75 and 287,789.94 is: 397,153.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,507.35 : 730,725.75 = 287,789.94 : x
  2. Step 2: Convert to fraction form
    529,507.35/730,725.75 = 287,789.94/x
  3. Step 3: Cross multiply
    529,507.35x = 730,725.75 × 287,789.94
  4. Step 4: Simplify right side
    529,507.35x = 210,295,519,748.96
  5. Step 5: Solve for x
    x = 210,295,519,748.96/529,507.35
  6. Step 6: Final answer
    x = 397,153.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.